package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserLoginService;
import com.sky.utils.HttpClientUtil;
import com.sky.vo.UserLoginVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserLoginServiceImpl implements UserLoginService {
    public static final String URL="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
    public User login(UserLoginDTO userLoginDTO) {
        String code=userLoginDTO.getCode();
        log.info("用户微信登录授权码：{}", code);
        Map<String,String> map=new HashMap<>();
        map.put("js_code",code);
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("grant_type","authorization_code");
        String json= HttpClientUtil.doGet(URL,map);
        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");
        if (openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //要判断当前用户是否为新用户
        User user=userMapper.getByOpenid(openid);
        if (user==null){
            user=User.builder().openid(openid).createTime(LocalDateTime.now()).build();
            //后续可以通过个人中心来完善用户信息
            userMapper.insert(user);
        }
        return user;

    }
}
